Technical Service Bulletin 20-NA-090 — 2023 CHEVROLET SILVERADO 5500
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | 20-NA-090 |
| Manufacturer | |
| Vehicle | 2023 CHEVROLET SILVERADO 5500 |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
This informational bulletin provides a way for the technician to identify if the ECM has been modified.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.